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[PATCH RFC 11/22] i386: add reserved FEAT_HV_NESTED_EBX/ECX/EDX CPUID le
From: |
Vitaly Kuznetsov |
Subject: |
[PATCH RFC 11/22] i386: add reserved FEAT_HV_NESTED_EBX/ECX/EDX CPUID leaves |
Date: |
Fri, 4 Sep 2020 16:54:20 +0200 |
As a preparation to expanding Hyper-V CPU features early, add reserved
FEAT_HV_NESTED_EBX/ECX/EDX CPUID leaves.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
target/i386/cpu.c | 15 +++++++++++++++
target/i386/cpu.h | 3 +++
target/i386/kvm.c | 6 ++++++
3 files changed, 24 insertions(+)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 3665f22093e9..479c4bbbf459 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1035,6 +1035,21 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS]
= {
.type = CPUID_FEATURE_WORD,
.cpuid = { .eax = 0x4000000A, .reg = R_EAX, },
},
+ [FEAT_HV_NESTED_EBX] = {
+ .type = CPUID_FEATURE_WORD,
+ /* reserved */
+ .cpuid = { .eax = 0x4000000A, .reg = R_EBX, },
+ },
+ [FEAT_HV_NESTED_ECX] = {
+ .type = CPUID_FEATURE_WORD,
+ /* reserved */
+ .cpuid = { .eax = 0x4000000A, .reg = R_ECX, },
+ },
+ [FEAT_HV_NESTED_EDX] = {
+ .type = CPUID_FEATURE_WORD,
+ /* reserved */
+ .cpuid = { .eax = 0x4000000A, .reg = R_EDX, },
+ },
[FEAT_SVM] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index 0668fe74df4f..0aad60e0c707 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -527,6 +527,9 @@ typedef enum FeatureWord {
FEAT_HV_RECOMM_ECX, /* CPUID[4000_0004].ECX */
FEAT_HV_RECOMM_EDX, /* CPUID[4000_0004].EDX */
FEAT_HV_NESTED_EAX, /* CPUID[4000_000A].EAX */
+ FEAT_HV_NESTED_EBX, /* CPUID[4000_000A].EBX */
+ FEAT_HV_NESTED_ECX, /* CPUID[4000_000A].ECX */
+ FEAT_HV_NESTED_EDX, /* CPUID[4000_000A].EDX */
FEAT_SVM, /* CPUID[8000_000A].EDX */
FEAT_XSAVE, /* CPUID[EAX=0xd,ECX=1].EAX */
FEAT_6_EAX, /* CPUID[6].EAX */
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index c18f221cd301..87b83a2aa2cb 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -1274,6 +1274,9 @@ static int hyperv_handle_properties(CPUState *cs,
c = cpuid_find_entry(cpuid, HV_CPUID_NESTED_FEATURES, 0);
if (c) {
env->features[FEAT_HV_NESTED_EAX] = c->eax;
+ env->features[FEAT_HV_NESTED_EBX] = c->ebx;
+ env->features[FEAT_HV_NESTED_ECX] = c->ecx;
+ env->features[FEAT_HV_NESTED_EDX] = c->edx;
}
}
@@ -1384,6 +1387,9 @@ static int hyperv_handle_properties(CPUState *cs,
c = &cpuid_ent[cpuid_i++];
c->function = HV_CPUID_NESTED_FEATURES;
c->eax = env->features[FEAT_HV_NESTED_EAX];
+ c->ebx = env->features[FEAT_HV_NESTED_EBX];
+ c->ecx = env->features[FEAT_HV_NESTED_ECX];
+ c->edx = env->features[FEAT_HV_NESTED_EDX];
}
r = cpuid_i;
--
2.25.4
- [PATCH RFC 01/22] WIP: update linux/headers, (continued)
- [PATCH RFC 01/22] WIP: update linux/headers, Vitaly Kuznetsov, 2020/09/04
- [PATCH RFC 03/22] i386: move hyperv_vendor_id initialization to x86_cpu_realizefn(), Vitaly Kuznetsov, 2020/09/04
- [PATCH RFC 04/22] i386: move hyperv_interface_id initialization to x86_cpu_realizefn(), Vitaly Kuznetsov, 2020/09/04
- [PATCH RFC 06/22] i386: move hyperv_limits initialization to x86_cpu_realizefn(), Vitaly Kuznetsov, 2020/09/04
- [PATCH RFC 07/22] i386: fill in FEAT_HYPERV_EDX from edx instead of eax, Vitaly Kuznetsov, 2020/09/04
- [PATCH RFC 11/22] i386: add reserved FEAT_HV_NESTED_EBX/ECX/EDX CPUID leaves,
Vitaly Kuznetsov <=
- [PATCH RFC 08/22] i386: invert hyperv_spinlock_attempts setting logic with hv_passthrough, Vitaly Kuznetsov, 2020/09/04
- [PATCH RFC 02/22] i386: drop x86_cpu_get_supported_feature_word() forward declaration, Vitaly Kuznetsov, 2020/09/04
- [PATCH RFC 10/22] i386: add reserved FEAT_HV_RECOMM_ECX/FEAT_HV_RECOMM_EDX CPUID leaves, Vitaly Kuznetsov, 2020/09/04
- [PATCH RFC 05/22] i386: move hyperv_version_id initialization to x86_cpu_realizefn(), Vitaly Kuznetsov, 2020/09/04
- [PATCH RFC 09/22] i386: add reserved FEAT_HYPERV_ECX CPUID leaf, Vitaly Kuznetsov, 2020/09/04
- [PATCH RFC 13/22] i386: split hyperv_handle_properties() into hyperv_expand_features()/hyperv_fill_cpuids(), Vitaly Kuznetsov, 2020/09/04
- [PATCH RFC 12/22] i386: always fill Hyper-V CPUID feature leaves from X86CPU data, Vitaly Kuznetsov, 2020/09/04